CAJ | 학술논문

为了实现激光-水声浅海地形遥感探测中水声信号的实时解调与处理，设计了一种基于FPGA的激光多普勒测振计信号采集与处理系统。以Cyclone Ⅱ系列FPGA为核心控制模块，结合ADS1174模数转换芯片、DAC8551数模转换芯片和MAX3232收发芯片，实现了高速数据采集和串口通信。该信号采集系统具有性能可靠、实时性强、集成度高、扩展灵活等特点，并且通过试验验证了其功能的正确性。
위료실현격광-수성천해지형요감탐측중수성신호적실시해조여처리，설계료일충기우FPGA적격광다보륵측진계신호채집여처리계통。이Cyclone Ⅱ계렬FPGA위핵심공제모괴，결합ADS1174모수전환심편、DAC8551수모전환심편화MAX3232수발심편，실현료고속수거채집화천구통신。해신호채집계통구유성능가고、실시성강、집성도고、확전령활등특점，병차통과시험험증료기공능적정학성。
In order to achieve real-time demodulation and processing of acoustic signal in the laser-underwater acoustic shallow terrain remote sensing,a FPGA-based signal acquisition and processing system for laser Doppler vibrometer was designed. The system adopts the FPGA of Cyclone Ⅱ as the core control module. The high-speed data acquisition and serial communication are realized in combination with ADS1174 A/D conversion chip,DAC8551 D/A conversion chip and MAX3232 transceiving chip. The signal acquisition system has the characteristics of reliable performance,good real-time performance,high integration level and flexible expansibility. The functions of the system were validated in the tests.